Wierd.

Ads. There are none, right? Wrong.
https://www.theud.com/pokecommunity/showthread.php?t=74178&page=2

Can anyone explain this to me? If it doesn't work, I'll get a print screen for you.
Forumer?

Er, we've had the google ads for quite a while, though - I forget for how long, but it's definitely not abnormal to see them. They're there in order to help the forum out.

(Though not all skins have them, since they haven't been added to those.)

is it the Google ads or is it because the page's skin didn't display correctly?

I dunno. It was an ad for forumer.